复合型酸气吸附剂的制备及性能研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (12): 4512-4520.

复合型酸气吸附剂的制备及性能研究

仇秀梅^1,2, 刘叶冬阳^1,2, 蔡浩^1,2, 龚关^1,2, 梁雅琪^1,2

1.湖北省地质实验测试中心, 自然资源部稀土稀有稀散矿产重点实验室, 武汉 430034;
2.湖北省地质局, 资源与生态环境地质湖北省重点实验室, 武汉 430034

收稿日期:2024-06-06 修订日期:2024-07-19 出版日期:2024-12-15 发布日期:2024-12-19
作者简介:仇秀梅(1987—),女,博士,高级工程师。主要从事固体废弃物综合利用的研究。E-mail:303984566@qq.com
基金资助:
湖北省自然科学基金联合基金(2024AFD397);湖北省地质局科技项目(KJ2022-37);湖北省地质实验测试中心科技项目(CSZXKJ-2406)

Preparation and Properties of Composite Acid Gas Adsorbents

QIU Xiumei^1,2, LIU Yedongyang^1,2, CAI Hao^1,2, GONG Guan^1,2, LIANG Yaqi^1,2

1. Key Laboratory of Rare Earth and Rare Scattered Minerals, Ministry of Natural Resources, Geological Experimental Testing Center of Hubei Province, Wuhan 430034, China;
2. Hubei Key Laboratory of Resources and Eco-Environment Geology, Hubei Geological Bureau, Wuhan 430034, China

Received:2024-06-06 Revised:2024-07-19 Published:2024-12-15 Online:2024-12-19

摘要/Abstract

摘要： 以高效处置矿山、地质、冶金等行业实验室和分析室在生产中产生的酸性有害气体为目的,以天然黏土矿物、碱金属矿物和无机助剂为原料,通过配方设计、挤出成型制备了系列复合型酸气吸附剂,并采用酸溶液浸泡实验和固定床动态吸附实验研究了其吸附性能。结果表明,复合型酸气吸附剂对HCl、HNO₃的浸泡吸附量分别为0.50~0.80 g/g和0.55~0.95 g/g,对挥发性HCl、HNO₃酸气吸收4 h后的Cl^-、NO^-₃吸附量分别大于35和40 mg/g,优于活性炭和市售同类型产品。复合型酸气吸附剂具有均匀微孔隙,其微观结构和化学组成更有利于挥发性酸气的扩散、捕捉和反应等,对Cl^-、NO^-₃的吸附过程符合准二级动力学模型,主要通过化学吸附、吸收作用并伴有物理吸附实现对挥发性HCl、HNO₃酸气的去除,具有推广价值。

关键词: 挥发性酸气, 复合型吸附剂, 黏土矿物, 碱金属矿物, HCl, HNO₃

Abstract: The study aimed at the efficient disposal of acidic harmful gases generated in the production of laboratories and analysis rooms in mining, geology, metallurgy and other industries. Natural clay minerals, alkali metal minerals and inorganic additives were took as raw materials, a series of composite acid gas adsorbents were prepared through formula design and extrusion molding, and their adsorption performances were studied by acid solution immersion experiment and fixed bed dynamic adsorption experiment. The results show that the soaking adsorption amounts of composite acid gas adsorbent on HCl and HNO₃ are 0.50~0.80 g/g and 0.55~0.95 g/g, and the adsorption amounts of Cl^- and NO^-₃ on volatile HCl and HNO₃ absorbed for 4 h are more than 35 and 40 mg/g, respectively, which are much higher than that of activated carbon and the same type of products on the market. The composite acid gas adsorbent has uniform microporosity, and its microstructure and chemical composition are more conducive to the diffusion, capture and reaction of volatile acid gas. The adsorption process on Cl^- and NO^-₃ is in accordance with the pseudo-second order kinetic model, which indicates it is mainly through chemical adsorption and absorption, and physical adsorption to remove volatile HCl, HNO₃ acid gas. The composite acid gas adsorbent has certain promotional value.

Key words: volatile acid gas, composite adsorbent, clay mineral, alkali metal mineral, HCl, HNO₃

中图分类号:

TQ424.24

仇秀梅, 刘叶冬阳, 蔡浩, 龚关, 梁雅琪. 复合型酸气吸附剂的制备及性能研究[J]. 硅酸盐通报, 2024, 43(12): 4512-4520.

QIU Xiumei, LIU Yedongyang, CAI Hao, GONG Guan, LIANG Yaqi. Preparation and Properties of Composite Acid Gas Adsorbents[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(12): 4512-4520.

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